ABB ACS880-204, Руководство по оборудованию

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Supply unit control devices
￭ Main disconnecting device
You must equip the supply unit with a main disconnecting device. You can use either a main
switch-disconnector [Q1.1] or a withdrawable main breaker [Q1]. With this switch, you can
isolate the main circuit of the drive from the power line.
WARNING!
The switch does not isolate the input power terminals or the auxiliary circuit from
the power line. To isolate the input power terminals, open the main breaker of the
supply transformer and lock it to the open position.
￭ Auxiliary voltage switch
The unit can be equipped with an auxiliary voltage switch [Q21]. Using the switch, you can
disconnect the auxiliary circuit from the power line.
￭ Operating switch
The cabinet can be equipped with an operating switch [S21].
By default, the operating switch controls the unit as follows:
• The ENABLE/RUN position: The control program closes the charging contactor [Q4]
and the main DC link is charged. After the DC link is charged, the main contactor [Q2]
will be closed and the charging contactor [Q4] opened. The module starts operating.
• The OFF position: The control program opens the main contactor [Q2] and the module
stops rectifying.
￭ Emergency stop and emergency stop reset buttons
The cabinet can be equipped with an emergency stop button [S61] and an emergency stop
reset button [S62]. Pressing the emergency stop button activates the emergency stop
function of the supply unit. The button locks to open position automatically. You must release
the button before you can return to the normal operation. Before the restart, you also need
to reset the emergency stop circuit with the reset button.
Note:
The customer is fully responsible for implementing and testing the functional safety circuits
according to the relevant legislation and acceptance testing regulations. The functional
safety option manuals give examples on implementing the safety circuits in ACS880
multidrives.
￭ The control unit
The supply modules of frame sizes R1i…R4i and R6i are controlled by a ZCU control unit.
The supply modules of frame size R8i are controlled by a BCU control unit.
For more information, see chapter Control unit.
￭ ACX-AP-x control panel
The ACX-AP-x control panel is the user interface of the unit. With the control panel, you
can:
• start and stop the unit
• view and reset the fault and warning messages, and view the fault history
Operation principle and hardware description 43